Sunday

May 24, 2015

May 24, 2015

Total # Posts: 530

**chemistry**

how to prepare 500ml of a 0.75M Sodium Phosphate buffer solution at pH 7.5, how would you go about doing that?
*May 18, 2015*

**social studies**

How did abolitionists like Channing justify taking no immediate action against slavery? Please help Miss Sue
*May 17, 2015*

**social studies**

What was the most radical approach to abolition? And was this approach put into action?
*May 17, 2015*

**social studies**

What was the most radical approach to abolition? Was this approach put into action?
*May 17, 2015*

**social studies**

How did abolitionists like Channing justify taking no immediate action against slavery
*May 17, 2015*

**math please help **

Medians line AX and line BY of triangle ABC are perpendicular at point G. Prove that AB = CG. In your diagram, <AGB should appear to be a right angle. Not sure what i need to do for this...
*April 23, 2015*

**Science/Physics **

My question is you walk 3.9 kilometers to school. In gym, you do the 12 minute run and actually make it 2.4 kilometers. After school you walk your friend home first and then go home it is 3.1 kilometers farther than your morning walk to school. What was your total distance ...
*April 15, 2015*

**Math **

A 40-foot by 10-foot rectangular garden is enclosed by a fence. To make the garden larger, while using the same amount of fencing, its shape is changed to a square. How many square feet larger than the old garden is the new garden?
*March 26, 2015*

**math**

1. A helicopter left Calgary and travelled 135 km west into the Rocky Mountains at an average speed of 2x^2 + 3x km/h. The return journey was at an average speed of 4x^2 - 9 km/h. a) Write and simplify an expression for the total flying time in hours. b) If the value of x is 6...
*March 12, 2015*

**math**

A photograph measuring 8 inches by 6 inches is surrounded by a mat. The mat has the same width on all sides of the photograph. The photograph and mat are put into a glass photo frame which just covers the outside of the mat. If the area of the glass surface is 120 square ...
*March 8, 2015*

**Physics 2 **

Using the diagram to the left, rank each of the given paths on the basis of the change in electric potential. Rank the largest-magnitude positive change (increase in electric potential) as largest and the largest-magnitude negative change (decrease in electric potential) as ...
*February 16, 2015*

**Chemistry **

How do you change 15% to moles
*February 1, 2015*

**Chemistry **

Determine the molarity of a 15.0 % by mass Hydrogen Peroxide solution. The density of Hydrogen Peroxide is 1.054 g/mL. The 15.0% by mass can be broken apart into 15.0 g Hydrogen Peroxide and 100.0 g solution. Use the density of Hydrogen Peroxide solution (1.054 g/mL) to ...
*February 1, 2015*

**Chemistry **

Determine the moles of Potassium Iodate present in a 0.267 m Potassium Iodate solution assuming you have 1 kg of solvent (H2O) present.
*February 1, 2015*

**math**

. Darya's car averages 36 miles per gallon. How many gallons of gas will she need for a 480-mile trip? What is the cost of the gas she needs if gas costs $3.12 per gallon?
*December 12, 2014*

**Math**

When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much is the account worth...
*December 10, 2014*

**Math with business apps**

Young and Company owes bond holders $5,500 interest at the end of each quarter for the next five years. How much must they deposit now at 8% interest compounded quarterly to yield an annuity payments of $5,500?
*December 6, 2014*

**Physics**

A jet transport has a weight of 2.03 x 106 N and is at rest on the runway. The two rear wheels are 16.0 m behind the front wheel, and the plane's center of gravity is 12.1 m behind the front wheel. Determine the normal force exerted by the ground on (a) the front wheel and...
*December 1, 2014*

**Physics**

The wheels, axle, and handles of a wheelbarrow weigh W = 65 N. The load chamber and its contents weigh WL = 538 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a force to the ...
*December 1, 2014*

**Math with business apps**

hahah sorry. No one was answering so I thought id try a different name
*November 24, 2014*

**Math with business apps**

How much should be invested at 6% compounded monthly so that the investment will be worth $20,000 in six years?
*November 24, 2014*

**Math with business apps**

You invest $5000 at 3% compounded monthly for 15 years. How much interest will you earn?
*November 24, 2014*

**Math with business apps**

Tom invested $7,000 at 6.5% interest compounded monthly. How much will be in this account after 18 months?
*November 24, 2014*

**Physics**

A stone is thrown horizontally at 30.0m/s {\rm m}/{\rm s} from the top of a very tall cliff. Calculate its horizontal position and vertical position at 2 s {\rm s} intervals for the first 10.0s {\rm s} a)Calculate the horizontal x and vertical y positions at time t = 2 s
*October 22, 2014*

**chemistry**

What is the pH of a solution of a monoprotic acid with a pKa of 6.6 if it is 39.3 % ionized in solution? Just provide the numerical answer, do not prefix with pH. Give your answer to two decimal places. Remember the definition of Ka
*October 19, 2014*

**Chemistry**

A pure copper sphere ha a radius of 0.935in. How many moles of copper does it contain? The volume of a sphere is (4/3)3.14r^3, and the density of the copper is 8.96g/cm^3. (1 in. = 2.54cm)
*October 14, 2014*

**math**

The school colors are blue and white. Elizabeth has 84 blue balloons and 96 white balloons. How many balloon bouquets can she make if she wants to haVe the same number of each color in each bouquet and use all balloons?
*October 8, 2014*

**math**

Riding on a school bus are 20 students in 9th grade, 10 in 10th grade, 9 in 11th grade, and 7 in 12th grade. Approximately what percentage of the students on the bus are in 9th grade?
*October 6, 2014*

**Combinatorics (math)**

In a certain country, 40 roads lead out of each city. When all roads are open, it is possible to travel from any city to any other. Each road leads from one city to another; there are no dead end roads. If one road is closed for repairs, is it still necessarily possible to ...
*October 4, 2014*

**PLEASE CHECK ASAP**

1.) a. 2.) b. 3.) b. 4.) a. 5.) c.
*September 16, 2014*

**chemistry**

3. Describe the subatomic structure of the nucleus of carbon-14, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Write the equation for the carbon-14 isotope decay by beta emission. ...
*September 12, 2014*

**Biology**

Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCACCTAGGTTCCG-5’ Tip: If you want ...
*August 4, 2014*

**algebra**

Can someone explain how to do this???? Write each expression using a single exponent. x^9/x^2 Answers: x^11 x^7 7 x^5
*June 6, 2014*

**geometry**

What is the answer ??
*June 2, 2014*

**geometry**

No Ms.Sue there isn't ....
*June 2, 2014*

**Physics**

so you would get 2m/s for both however that is not correct
*May 27, 2014*

**Physics**

A 69.5kg football player is gliding across very smooth ice at 2.15m/s . He throws a 0.470kg football straight forward. What is the player's speed afterward if the ball is thrown at 16.0m/s relative to the ground? What is the player's speed afterward if the ball is ...
*May 27, 2014*

**Science**

According to the following thermochemical reaction, how much energy is involved in the reaction of 18.5 g of NaHCO3? Is the reaction endothermic or exothermic according to how the thermochemical equation is written? 2NaHCO3(s) + 129 kJ → Na2CO3(s) + H2O(l) + CO2(g)
*May 27, 2014*

**french**

I know that it is asking me something about sailing but I'm not sure exactly what it's asking.
*May 23, 2014*

**french**

Answer the question in the negative. Est-ce que tu fais de la voile?
*May 23, 2014*

**algebra**

Do you multiply .25 x 440 to get the answer? (25 degrees)
*May 19, 2014*

**algebra**

The choices are: 25 degrees 90 degrees 98 degrees 172 degrees
*May 19, 2014*

**algebra**

110 students like the program. 120 students think the program is unnecessary. 210 students plan on running for student government next year. If a circle graph were made from the data, what is the measure of the central angle for the group that likes the program. I'm not ...
*May 19, 2014*

**french**

Je vais au theatre?
*May 13, 2014*

**french**

Oui, je suis.
*May 13, 2014*

**french**

Is it "Are you going to the theatre?"
*May 13, 2014*

**french**

Are they going to the theatre?
*May 13, 2014*

**french**

i am not sure what it says.
*May 13, 2014*

**french**

Answer the question in a complete sentence: Est-ce que vas au theatre?
*May 13, 2014*

**french**

Is Les Miserables an unknown play?
*May 13, 2014*

**french**

unknown?
*May 13, 2014*

**french**

Have you seen the Les Miserables play?
*May 13, 2014*

**french**

Answer the question in a complete sentence: Est-ce que Les Miserables est une piece inconnue?
*May 13, 2014*

**french**

ce concert est tres ennuyeux
*May 13, 2014*

**math**

find fifteen different fractions between 1/4 and 1/2
*May 4, 2014*

**math**

Take west to be the positive direction. The height of a sloped roof above the place where I stand is h = 12 feet (see the figure below). If I move 3 feet west, the height is 10 feet. If I move 2 additional feet west, what is the height of the roof above the place where I stand?
*April 5, 2014*

**physics (clear answer)**

did you ever figure out the answer? I'm doing this problem now and i can't figure it out
*April 3, 2014*

**physic angular momentum and torque**

Calculate the mass m needed in order to suspend the leg shown in the figure(Figure 1) . Assume the leg (with cast) has a mass of 15.5kg , and its CG is 35.5cm from the hip joint; the sling is 76.5cm from the hip joint.
*March 29, 2014*

**Science**

1. Which of the following is an example of matter? (1 point) leaves shadows light from the sun sound 2. Which of the following is an example of a chemical property of matter? (1 point) ability to melt ability to freeze ability to ...
*February 26, 2014*

**Math xc**

I've tried and tried to answer this question..I just hate math and math hates me. So let's get to the point why you are all here 1:Find the unit price for each option below. Round to the nearest cent when necessary. Indicate which option is a better buy. Option 1: 10 ...
*February 26, 2014*

**social studies**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. ...
*February 25, 2014*

**Math**

How many fact families with a dividend under 100 contain only odd numbers
*February 11, 2014*

**Physics**

A golf ball is hit with an initial velocity of 15 meters per second at an angle of 35 degrees above the horizontal. What is the vertical component of the golf ball's initial velocity? a)8.6 m/s b)9.8 m/s c)12 m/s d)15 m/s I know you use 15cos 35 feta to solve the question ...
*February 3, 2014*

**Health**

Ok! Thanks sooo much I think thats all for now!
*January 28, 2014*

**Health**

Ok! A swimmer would like to his time in a 100 yard freestyle race. After talking to his coach, he intends to focus on one critical element at the begining of the race. The swimmer will try to improve his 100 yard freestyle time by improving his power of a recovery stroke ...
*January 28, 2014*

**Health**

Nevermind...Would you mind helping me with a few more?
*January 28, 2014*

**Health**

Thanks! Are you from connections?
*January 28, 2014*

**Health**

Devon and Hunter have been going to the local skateboard park for several weeks and learning new tricks on their skateboards. Some of the older skaters at the park have been giving them tips to be successful. To increase the amount of time Devon stays on the skateboard, he ...
*January 28, 2014*

**Health**

Ok thank you!
*January 28, 2014*

**Health**

1 Select the skill-related component which is defined as the ability to perform a combination of movements with different parts of your body? A-Balance B-coordination*** C-power D-speed Please help! ASAP!
*January 28, 2014*

**Math please help hurry**

A submarine is travelling parallel to the surface of the ocean at a depth of 626m. It begins a constant ascent in order to reach the surface after travelling a distance of 4420m. The ascent takes 35mins. A.) what angle of ascent or angle of elevation would the submarine need ...
*December 9, 2013*

**Acid/Base Chemistry**

A 497 mL sample of 0.9960 M HI is mixed with 443 mL sample of KOH (which has a pH of 13.51). What is the pH of the resulting solution? What are the steps to solving this problem? I think you need to find the concentration of OH by taking 10^-pOH, and then do an ICE table from ...
*December 8, 2013*

**Geometry**

for each parallelogram find the measures of the angles formed by extending two adjacent side through their common vertex: angle is 90 degrees
*December 1, 2013*

**Math quick question**

Thank u so much:)
*November 20, 2013*

**Math quick question **

Create a system of linear equations with this situation: Megan considers two different car rental options. One option costs $19 per day plus $0.12 per kilometre . Another option costs $42.50 per day for unlimited kilometres . Thanks :)
*November 20, 2013*

**phyics**

did you ever figure out the answer? I'm doing this problem now and i can't figure it out
*November 12, 2013*

**science**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013*

**Socials**

If in Napoleon Bonaparte's perspective, what was the best form of government did he want and why would this be good for the country(France)? Doing a project where you make a campaign trying to persuade people to vote for you(Napoleon) :) Thanks in advance!
*October 22, 2013*

**Physics -URGENT-**

A 2 kg mass accelerates at 5.7 m/s 2 in a direction 19◦ north of east. One of the two forces acting on the mass has a magnitude of 17.1 N and is directed north. Determine the magnitude of the second force. Answer in units of N
*October 13, 2013*

**To ms sue**

Can you please help me with my English , much appreciated
*September 19, 2013*

**English writing a concluding paragraph**

I have to write from specific to general in my concluding paragraph and can't have any contractions, no 1st person or second person , no rhetorical questions , no in conclusion, in summary, etc
*September 19, 2013*

**English writing a concluding paragraph**

My essay is about conformity and rebellion. I need a really good conclusion. My intro is this: In life there will be certain situations in which we will have to stay in order or choose to make our decisions ourselves. For example there will be times when conformity will strike...
*September 19, 2013*

**7th Grade**

Well we learn about the Earth and DNA and plants and all of the components of a plant we also learn about Animals.
*September 16, 2013*

**Sciences**

Helium has an atomic number of two.what can be inferred about helium from this fact?
*September 16, 2013*

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. y5/3 is under the square root sign sorry I retyped this, but I made a mistake typing it before
*September 12, 2013*

**Math**

No wait let me re type the question: y5/3 is under the square root sign
*September 12, 2013*

**Math**

the ay was supposed to be a square root sign..
*September 12, 2013*

**Math**

how do you write radicals as powers? please help me with the following question, I know the answer but I don't know HOW to get it. I must learn this so please help me. ãy 5/3
*September 12, 2013*

**English, check my answers**

Oh thank you:)
*September 11, 2013*

**English, check my answers**

please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' ...
*September 11, 2013*

**Chemisry**

6M HCl + 1M NaOH => NaCl + H2O If I'm understanding this correctly, all of the NaOH is used up because the molarity is 1 where the HCl's is 6 this leaves excess HCl correct?
*August 26, 2013*

**Algebra**

The deck around a swimming pool has the same width all the way around. The perimeter of the pool is 50m. The outside perimeter of the deck is 74m. What is the width of the deck
*June 10, 2013*

**Math**

if 3/5 of the class are boys and there are 12 more boys than girls. How many girls are there in the class?
*June 4, 2013*

**Physics**

An arrow is fired horizontally from the top of a 40.0-m vertical cliff and lands 125 m away. Therefore the arrow was fired at _____ m/s.
*May 18, 2013*

**Physics**

I don't understand.. could you give a better answer?
*May 11, 2013*

**Physics**

A car that was initially at rest reaches a final speed of +50.0 m/s over a displacement of +55.0 m. What is the magnitude of the acceleration? Find the time it took to travel the first 55 m.
*May 11, 2013*

**environment**

United Nations Environment Program Greenpeace
*May 11, 2013*

**chemistry**

enzymes convert glucose M=180.2 to ethanol M=46.1 according to the equation C6H12O6=2C2H5OH + 2CO2 what is the maximum mass of ethanol that can be made from 15.5 kg of glucose?
*May 4, 2013*

**math**

a company employs 12 gardeners at $26 per day , and 8 clerks at $17 per day. What is the mean daily wage,in dollars,of the 20 employees?
*April 28, 2013*

**math**

a man pays 60 cents for every 200m3 of gas used,plus a fixed charge of $13.75. How much does he pay when he uses 55 000m3 of gas?
*April 28, 2013*